[Tracking Requested - why for this release]: This regression affects: * MOZ_ENABLE_WAYLAND=1 users with Firefox 79, * MOZ_X11_EGL=1 and MOZ_ENABLE_WAYLAND=1 users with Firefox 80.
Everyone is excited that Firefox 80 finally supports VAAPI hardware decoding on X11, it got news coverage, etc., but those who tested it know that it suffers from at least two fatal bugs. (bug 1645672 is the other one.) Wayland/MOZ_X11_EGL and VAAPI are still experimental and disabled-by-default, but it's a killer feature that brings users back. Therefore please consider uplifing this into beta, and even into a dot release, if there is any. Downstream Fedora applies this patch on Firefox 79: https://src.fedoraproject.org/rpms/firefox/c/cd18e999f576523b6b3f2076bca625d5e04d1178?branch=master https://www.reddit.com/r/archlinux/comments/i0ireu/firefox_developer_edition_hardware_video/fzpojad/ https://www.reddit.com/r/flatpak/comments/i157dm/green_flashes_in_video_in_firefox/ https://www.reddit.com/r/linux/comments/i04cvr/psa_firefox_79_appears_to_break_vaapi_decoding_on/ https://www.reddit.com/r/firefox/comments/i1p2ct/linux_vaapi_video_decode_acceleration_unreliable/ -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1889784 Title: Hardware-accelerated video decoding (VA-API) broken in Firefox 79 (Wayland) Status in Mozilla Firefox: Fix Released Status in firefox package in Ubuntu: Triaged Bug description: After updating Firefox from 78 to 79, hardware-accelerated video decoding no longer works properly in Wayland: streaming video gets cut off with an error message from the service. == Steps to reproduce == 1. Follow the steps in [1] to enable VA-API. 2. Open a Youtube/Twitch video (for instance https://www.twitch.tv/rifftrax), press play == What I expect to happen == For the video be played without issues (as it did with Firefox 78). == What happens == After playing for a while (anything from just a few seconds to a couple of minutes), the video stops and is replaced by a service-specific error message, such as error #3000 (in case of Twitch). Even when playing, the video also flickers green. After reloading the tab, the video again plays for a few seconds before the error message reappears. == Other info == A fix is apparently already in the works upstream [2]. * [1] https://mastransky.wordpress.com/2020/06/03/firefox-on-fedora-finally-gets-va-api-on-wayland/ * [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1645671 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: firefox 79.0+build1-0ubuntu0.20.04.1 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 BuildID: 20200720193547 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Jul 31 17:07:50 2020 InstallationDate: Installed on 2016-10-13 (1387 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fi_FI.UTF-8 SHELL=/bin/bash SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2020-05-11T14:52:22.308877 To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1889784/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
